EP0760395B1 - Vorrichtung zum Flüssigmetall-Transport in der Giesshalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung - Google Patents

Vorrichtung zum Flüssigmetall-Transport in der Giesshalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung Download PDF

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Publication number
EP0760395B1
EP0760395B1 EP96107534A EP96107534A EP0760395B1 EP 0760395 B1 EP0760395 B1 EP 0760395B1 EP 96107534 A EP96107534 A EP 96107534A EP 96107534 A EP96107534 A EP 96107534A EP 0760395 B1 EP0760395 B1 EP 0760395B1
Authority
EP
European Patent Office
Prior art keywords
pipe
pipe section
main channel
tap hole
liquid metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96107534A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0760395A1 (de
Inventor
Peter Dr.-Ing. Heinrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0760395A1 publication Critical patent/EP0760395A1/de
Application granted granted Critical
Publication of EP0760395B1 publication Critical patent/EP0760395B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag

Definitions

  • the invention relates to a device for liquid metal transport in the casting hall of a shaft furnace, especially blast furnace, and a method for Operation of this device consisting of at least one installed after tapping the blast furnace Main channel with siphon and downstream drainage channels with a transfer station in the liquid metal transport containers or trolley exists.
  • Main channels have been around for some Years as so-called pool channels with relatively large Dimensions in which there is always a liquid residue Pig iron remains, executed. Are typical at Large blast furnace channels of 12 - 15 m length and 2.0 to 2.5 m width.
  • the disadvantage here is that after each generation of 0.6 up to 0.8 million tons of pig iron requiring several days Refractory repair is needed, which is under unfavorable Conditions within the casting hall got to. During this time, the racking in question can not be used.
  • the liquid metal initially flows in the main channel through a siphon (fox) to separate pig iron and slag; after that the slag-free flows Pig iron through open, but mostly like the main channel also covered with plates or hoods, with ff material supplied channels to the different Parking spaces for pig iron transport vehicles.
  • siphon fox
  • ff material supplied channels to the different Parking spaces for pig iron transport vehicles.
  • tipping channels come with electric or hydraulic drive for Commitment.
  • the slag separated at the siphon or fox in turn leaves the main channel and comes via open or with Covered gutters either to a slag pan, a pelletizer with water or freezes through natural cooling in one Cinder bed made of sand.
  • Red dust (Fe oxide) accumulates particularly at the tap hole, the tipping channel and at the pig iron inlet in the transport vessel, but to a lesser extent also at the pig iron and slag channels covered with hoods and the main channel. This forms as a result of the hot pig iron coming into contact with the surrounding air.
  • dedusting systems for high suction volumes are installed using the technology that is common today. These dedusting systems initially consist of a system for collecting the dusts (hoods, pipes), with several switchable strands being provided on blast furnaces with several tap holes. This in turn requires fittings with large diameters, corresponding actuators and control logic.
  • the extracted air amounts are in the order of a few 100,000 Nm 3 / h to well over 1.0 million Nm 3 / h.
  • intensive suction the contact of the hot pig iron with air is naturally intensified and the amount of dust per ton of pig iron increases.
  • Devices for partitioning / housing are known of the pig iron flow through mechanical devices such as Hoods, covers and the like.
  • DE 39 03 444 C1 describes one method and one Device for preventing air contact from Pig iron by fogging with inert gas, e.g. B. Nitrogen known from the tap hole of the metallurgical furnace leading the liquid metal Drainage channels to form the smallest possible free flow of liquid metal Interior are covered, the transfer point, in of the liquid metal from the transport and Drainage channel is passed into a pouring vessel, is shielded largely gastight, with both the free interior of the covered gutters as well the largely gas-tight shielded interior of the Transfer point and the pouring vessel interior with Be flushed with inert gas.
  • the liquid metal discharge jet is from the outlet opening into the pouring vessel from a ring-shaped one that prevents air from entering Inert gas jacket additionally shielded.
  • the device consists of at least one on one Tap opening of the metallurgical furnace installed Transport and drainage channel, a transfer station with a swivel or tilting channel and a distribution system for the liquid metal in a pouring vessel, each Transport and drainage channels over their entire length or has several covers, one as possible small free, d. H. not flowed through by the liquid metal Form interior.
  • the transfer stations including the outlet openings are largely gastight due to a closed Shielded housing.
  • a disadvantage of this tapping system is that of high temperature of the pig iron triggered thermals that a constant replenishment of the inert gas required.
  • the present invention therefore has the task posed, a timely, safe and fast Opening and closing of blast furnace tap holes ensure suppression of dust formation in the areas taphole, main channel, pig iron and Slag chutes to allow a reduction in manual work in the gutter area a reduction in investment and operating costs to contribute.
  • ff material Pipe section arranged between the racking on the blast furnace and the main channel.
  • a stationary drill and one stationary tamping machine On both sides of the pipe section are a stationary drill and one stationary tamping machine arranged. This is the Pipe section itself with two connecting pieces equipped, through which the drill of the drill or the trunk of the tamping machine is guided.
  • the ceramic (first) slide lock is used for tapping opened and then closed again. Immediately after the closing is over the Inert gas connection, the tap hole was washed free of pig iron and this state by automatically setting one maintain a small inert gas flow rate. The pig iron solidifies in the tap hole and a blocking of the slide closure avoided.
  • the stuffing fills the tap hole towards the blast furnace; at the same time penetrates stuffing material in the direction of the stationary drilling machine to the tip of the drill bit, and at the same time it moves the stuffing also on the slide closure without however, to fully reach the ceramic slide plate, because an inert gas cushion forms in front of it.
  • the subsequent opening of the tap hole is followed by Opening a flap veiled with inert gas at the top of the cover of the main channel second, above the main channel in an inclined position - Inclination approx. 6 ° according to the inclination of the tap hole - arranged drill after opening the ceramic slide closure operated.
  • This drill drills the tap hole through the Pipe section as well as through the inside of the On the FF lining. As soon as the tap hole is free, the drill will be withdrawn and the flap closed. To the unavoidable occurring during this drilling process To collect dust is on the exhaust hood a dedusting line connected to a small, only for the duration of the drilling process operated filter system, leads.
  • the main channel is one Covering hood covered.
  • the connection between The main channel and cover hood are known per se Way carried out so that the entry of outside air the pig iron bath located inside the main channel is largely suppressed, e.g. B. by means of a sand cup.
  • the cover hood can be raised and lowered mechanically as well as laterally movable, for inspections and possibly ff repairs quick access to To create the main channel.
  • each tube length also has one metallic pin that the entire ff-delivery of penetrates inside and out in contact with the liquid pig iron is available when this through the Pipe length flows.
  • a suitable electrical Circuit it is possible to instantly recognize if at one point the molten pig iron Wear lining has consumed so far that this in Comes into contact with the wire mesh.
  • the person in question Pipe length can be reduced at the next opportunity Effort changed and a freshly delivered one Pipe section can be used.
  • the pipe system comes with appropriate branches provided so that it has all the designated parking spaces with Can supply pig iron. Switching the pig iron flow from one parking space to the other takes place by means of remote operated ceramic slide closures.
  • Such heating has the advantage that, on the one hand the pig iron does not solidify and on the other hand none Temperature change stress for the Refractory lining occurs.
  • the main channel is designed as a quick change channel. No heavy lifting gear is needed to change them needed, but lowering the used and the new main channel is lifted with a hydraulic lifting device, such as from known from EP 0 279 165 B1.
  • the invention is based on schematic Embodiments described in more detail.
  • FIG. 1 shows a plan view of the tapping system or on one of the liquid metal transport systems of a blast furnace (1) with arranged in the blast furnace shell (1.1) Racking (1.2) with tap hole (1.3).
  • a pipe section (3) with a first connection piece (3.1) for a stationary one Drill (4) and a second connection piece (3.2) for flanged a stationary tamping machine (5).
  • a first connection piece (3.1) for a stationary one Drill (4) and a second connection piece (3.2) for flanged a stationary tamping machine (5).
  • To the Pipe section (3) then closes a first slide (6.1) with a ceramic plate and the inlet opening (2.1) of the main channel (2).
  • Inert gas feeds (7) arranged at the pipe section (3) before (in the sense of Pig iron flow) and behind the first slide (6.1) on the Inlet opening (2.1) of the main channel (2) Inert gas feeds (7) arranged.
  • Another Inert gas supply (7) is at the outlet opening (2.2) the main channel (2).
  • a burner (15) for Heating the pipe sections (12) is in the first Pipe section arranged after the main trough (2).
  • Fig. 2 shows a longitudinal section through the front part the liquid transport system.
  • a pipe section (3) with connecting piece (3.1, 3.2) flanged to which a second Connects pipe section (3) with a first slide (6.1).
  • This second pipe section (3) is with the inlet opening (2.1) the main channel (2) also gas-tight connected.
  • another pipe section (12) with a second one Flanged slide (6.2) to the other if necessary Pipe sections (12) are added.
  • a T-shaped pipe section (13) arranged the pig iron in one of two Cast iron dolly is flowing.
  • the main channel (2) is designed as a quick change channel. It becomes worn after the ff lining about tension elements, not shown, on tie rods slide down and up from the operating position in Height of the racking platform on a standing in the hallway Transport vehicle lowered.
  • the tie rods are on Main beam support brackets (2) attached.
  • Fig. 3 shows the cross section through a ff material pipe section (3/12).
  • the ff material consists of the insulating layer (12.1), the Permanent lining (12.2) and the wear lining (12.3) together.
  • a wire mesh (12.4) is inserted, which over a metallic pin (12.5) with an electrical one Monitoring device is connected to the state of the wear chuck (12.3).
  • Fig. 4 shows devices for sealing two Pipe sections (3) or (12).
  • a pipe clamp (3.3) is placed on each side with a supply line (3.4) with shut-off valve (3.5) is provided to a sealant (3.7) in the remaining free gap between the bricked Press pipe sections (3) or (12) into it.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Continuous Casting (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Iron (AREA)
EP96107534A 1995-08-31 1996-05-11 Vorrichtung zum Flüssigmetall-Transport in der Giesshalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung Expired - Lifetime EP0760395B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19532040 1995-08-31
DE19532040A DE19532040C2 (de) 1995-08-31 1995-08-31 Vorrichtung zum Flüssigmetall-Transport in der Gießhalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung

Publications (2)

Publication Number Publication Date
EP0760395A1 EP0760395A1 (de) 1997-03-05
EP0760395B1 true EP0760395B1 (de) 2001-11-14

Family

ID=7770842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107534A Expired - Lifetime EP0760395B1 (de) 1995-08-31 1996-05-11 Vorrichtung zum Flüssigmetall-Transport in der Giesshalle eines Schachtofens und Verfahren zum Betrieb dieser Vorrichtung

Country Status (12)

Country Link
US (1) US5673901A (ja)
EP (1) EP0760395B1 (ja)
JP (1) JPH09125117A (ja)
KR (1) KR100426672B1 (ja)
AT (1) ATE208830T1 (ja)
AU (1) AU698803B2 (ja)
BR (1) BR9603635A (ja)
CA (1) CA2182246A1 (ja)
DE (2) DE19532040C2 (ja)
ES (1) ES2167483T3 (ja)
TW (1) TW302312B (ja)
ZA (1) ZA966673B (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3011366B2 (ja) 1995-10-26 2000-02-21 株式会社ノリタケカンパニーリミテド 膜形成素材を含む基板の焼成方法および装置
US5777705A (en) * 1997-05-30 1998-07-07 International Business Machines Corporation Wire bond attachment of a liquid crystal display tile to a tile carrier
CN101942536B (zh) * 2009-07-07 2012-10-24 范威 高炉铁口用多通道旋转接头
CN102417942A (zh) * 2010-09-27 2012-04-18 周久乐 一种高炉炼铁虹吸出铁装置
CN113579176B (zh) * 2021-07-30 2022-11-29 湖南精量重工科技有限公司 一种铸造高精度的工件铸造方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262692A (en) * 1966-07-26 Furnace botting and tapping apparatus
GB1064617A (en) * 1965-07-08 1967-04-05 Huttenwerksanlagen Ges Apparatus for tapping metal from furnaces
US3365187A (en) * 1965-10-20 1968-01-23 Bethlehem Steel Corp Runner system for blast furnace
US4208041A (en) * 1970-09-15 1980-06-17 Abrashev Georgi I Metallurgical apparatus
DE2619534C2 (de) * 1976-05-04 1978-06-29 Didier-Werke Ag, 6200 Wiesbaden Abflußeinrichtung für metallurgische öfen
GB1603119A (en) * 1977-11-21 1981-11-18 Lodge Cottrell Ltd Fume containment
GB1596442A (en) * 1978-02-07 1981-08-26 Lydmet Ltd Casting of long hollow objects
DE2918344A1 (de) * 1979-05-07 1980-11-20 Metacon Ag Schieberverschluss fuer den abstichkanal eines metallurgischen ofens oder gefaesses
US4355788A (en) * 1980-03-24 1982-10-26 Bate Micheal D Hot metal runner system with air pollution controls
US4357003A (en) * 1980-09-24 1982-11-02 Jones & Laughlin Steel Corporation Blast furnace cast house pollutant suppression
US4354668A (en) * 1981-08-20 1982-10-19 Jones & Laughlin Steel Incorporated Method and apparatus for determining completion of a cast in blast furnace casthouse pollution suppression system
US4475720A (en) * 1983-03-14 1984-10-09 Broom Gilbert R Casthouse emission control system
DE3624266A1 (de) * 1986-07-18 1988-01-21 Gutehoffnungshuette Man Vorrichtung zum auswechseln von hauptabstichrinnen an hochoefen
DE3705099A1 (de) * 1987-02-18 1988-09-01 Gutehoffnungshuette Man Vorrichtung zum auswechseln von abstichrinnen an schachtoefen
JP2671431B2 (ja) * 1988-09-14 1997-10-29 株式会社豊田自動織機製作所 超電導可逆可変インダクタ
DE3903444C1 (en) * 1989-02-06 1990-02-15 Kloeckner Stahl Gmbh Method and apparatus for transporting liquid metal from a metallurgical furnace to a casting vessel
HUT58004A (en) * 1989-02-06 1992-01-28 Kloeckner Stahl Gmbh Method for eliminating the formation of flue gases at metallurgical operations and at the transportation of liquid metal from the metallurgical pots into the casting crucibles and structure for transporting the liquid metal from the furnaces of metallurgy of non-ferrous metals to the casting crucibles
DE3904415C1 (ja) * 1989-02-14 1990-04-26 Intracon Handelsgesellschaft Fuer Industriebedarf M.B.H., 6200 Wiesbaden, De
DE4033482C1 (ja) * 1990-10-20 1992-02-20 Kloeckner Stahl Gmbh, 4100 Duisburg, De

Also Published As

Publication number Publication date
AU6069596A (en) 1997-03-06
AU698803B2 (en) 1998-11-05
DE19532040C2 (de) 1999-05-27
ES2167483T3 (es) 2002-05-16
KR100426672B1 (ko) 2004-06-24
DE19532040A1 (de) 1997-03-06
US5673901A (en) 1997-10-07
ZA966673B (en) 1997-02-17
EP0760395A1 (de) 1997-03-05
BR9603635A (pt) 1998-05-19
ATE208830T1 (de) 2001-11-15
DE59608182D1 (de) 2001-12-20
JPH09125117A (ja) 1997-05-13
KR970010979A (ko) 1997-03-27
CA2182246A1 (en) 1997-03-01
TW302312B (ja) 1997-04-11

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